If you make an unsubstantiated allegation, you are expected to substantiate it.
Actually, it is. It is what is required in our judicial system and is what’s expected in informal and formal debate. Look it up.
If you make an allegation but refuse to present evidence to support it then the allegation is summarily dismissed and you cannot be taken seriously.
You sold out your integrity by refusing to substantiate your claim and you will be treated accordingly as the hysterical windbag that you are.